drift

North-looking near-vertical aerial photograph of
a 1-mile by 1.5-mile area recently-exposed by the retreat of Bering
Glacier. The ground surface is covered by glacial sediment deposited
in several ways, including as lodgement and ablation till, and as
crevasse fill, Bering Glacier, Alaska. Bering Glacier flows through
Wrangell-Saint Elias National Park. Credit: USGS.

In oceanography it indicates slow, oceanic circulation. Sedimentary
drift is a general description of surface debris carried either
by a river or glacier.

The material left behind after the retreat of a glacier. The unstratified
material deposited directly on land is called till;
fluvio-glacial drift, well stratified, is that transported by melted waters
of the glacier. Drift may be composed of particles from the fine sand up
to huge boulders, and may be up to 100 meters deep.